Concord, Mass.
1900.
June 3
  Cloudy with strong, cool E. wind. Heavy rain in late
afternoon & well into the night.
Ball'sHill  
  Spent most of the forenoon in the woods on & near
Ball's Hill digging plants, visiting nests etc. In the bushes
by the river I found a large dark-colored & very tame
Gray-cheeked Thrush. A Canadian Warbler was singing in
the swamp behind the Hill where a pair usually breed. The
female Nashville Warbler was sitting on her nest and a male which 
I suppose must have been her mate singing in the pines
at the opening beyond the swamp.
Canada
Warbler
  The Redstart's nest in the oak behind Gilbert's cabin which
was begun May 16th. and which contained 2 eggs on June 1st
looked dishevelled last evening and as the bird had evidently
deserted it and was beginning a new nest nearer the cabin
I felt sure that the eggs had been destroyed. Gilbert examined
it this morning and found it empty. About an hour later I
heard a Jay screaming and the next moment saw the bird coming
high above the tree tops & evidently from a distance. It headed 
straight for the oak, alighted in the upper branches, screamed
once or twice and then with half-closed wings dropped
12 or 15 feet to the nest where it perched for about half-a-
minute bending forward with its head turned on one side
and its bill actually within the nest. Evidently, as it
seemed to me, it had returned in the hope that another
egg might have been laid since its visit yesterday for
I can no longer doubt that not only a Jay but this
particular Jay plundered the nest yesterday. Finding
the nest empty this morning it flew back silently in
the direction whence it had come. The Redstart seemed
Blue Jays
raid the
nest of a
Redstart.
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